package com.sky.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.json.JsonMapper;
import com.sky.interceptor.JwtTokenAdminInterceptor;
import com.sky.interceptor.JwtTokenUserInterceptor;
import com.sky.json.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

import java.util.List;

/**
 * 配置类，注册web层相关组件
 */
@Configuration
@Slf4j
public class WebMvcConfiguration extends WebMvcConfigurationSupport {

    @Autowired
    private JwtTokenAdminInterceptor jwtTokenAdminInterceptor;

    @Autowired
    private JwtTokenUserInterceptor jwtTokenUserInterceptor;

    /**
     * 注册自定义拦截器
     *
     * @param registry
     */
    protected void addInterceptors(InterceptorRegistry registry) {
        log.info("开始注册自定义拦截器...");
        registry.addInterceptor(jwtTokenAdminInterceptor)
                //值拦截管理端的请求，不拦截用户端的请求
                .addPathPatterns("/admin/**")
                //排除登录接口
                .excludePathPatterns("/admin/employee/login");
        registry.addInterceptor(jwtTokenUserInterceptor)
                //值拦截管理端的请求，不拦截用户端的请求
                .addPathPatterns("/user/**")
                //排除登录接口
                .excludePathPatterns("/user/user/login")
                .excludePathPatterns("/user/shop/status");
    }


    /**
     * 通过knife4j生成接口文档
     * @return
     */
    @Bean
    public Docket adminDocket() {
        //生成接口文档信息
        ApiInfo apiInfo = new ApiInfoBuilder()
                .title("苍穹外卖项目接口文档")
                .version("2.0")
                .description("苍穹外卖项目接口文档")
                .build();
        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .groupName("管理员端接口")
                .apiInfo(apiInfo)
                .select()
                //指定扫描的包路径
                .apis(RequestHandlerSelectors.basePackage("com.sky.controller.admin"))
                .paths(PathSelectors.any())
                .build();
        return docket;
    }

    @Bean
    public Docket userDocket() {
        //生成接口文档信息
        ApiInfo apiInfo = new ApiInfoBuilder()
                .title("苍穹外卖项目接口文档")
                .version("2.0")
                .description("苍穹外卖项目接口文档")
                .build();
        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .groupName("用户端接口")
                .apiInfo(apiInfo)
                .select()
                //指定扫描的包路径
                .apis(RequestHandlerSelectors.basePackage("com.sky.controller.user"))
                .paths(PathSelectors.any())
                .build();
        return docket;
    }

    /**
     * 设置静态资源映射
     * @param registry
     */
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        //registry是从父类继承而来的，用于注册静态资源映射
        //addResourceHandler方法用于添加静态资源的 访问路径
        //addResourceLocations方法用于添加静态资源的 位置
        registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }


    //扩展消息转换器
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建新的消息转换器对象
        MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        //需要为消息转换器设置新的 ObjectMapper 对象
        jackson2HttpMessageConverter.setObjectMapper(new JacksonObjectMapper());
        //将新的消息转换器添加到 converters容器 列表中
        converters.add(0,jackson2HttpMessageConverter);

    }
}
